diff options
Diffstat (limited to 'arch/x86/include/asm/sev.h')
| -rw-r--r-- | arch/x86/include/asm/sev.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h index 58e028d42e41..89075ff19afa 100644 --- a/arch/x86/include/asm/sev.h +++ b/arch/x86/include/asm/sev.h @@ -223,6 +223,18 @@ struct snp_tsc_info_resp { u8 rsvd2[100]; } __packed; +/* + * Obtain the mean TSC frequency by decreasing the nominal TSC frequency with + * TSC_FACTOR as documented in the SNP Firmware ABI specification: + * + * GUEST_TSC_FREQ * (1 - (TSC_FACTOR * 0.00001)) + * + * which is equivalent to: + * + * GUEST_TSC_FREQ -= (GUEST_TSC_FREQ * TSC_FACTOR) / 100000; + */ +#define SNP_SCALE_TSC_FREQ(freq, factor) ((freq) - (freq) * (factor) / 100000) + struct snp_guest_req { void *req_buf; size_t req_sz; @@ -231,6 +243,7 @@ struct snp_guest_req { size_t resp_sz; u64 exit_code; + u64 exitinfo2; unsigned int vmpck_id; u8 msg_version; u8 msg_type; @@ -282,8 +295,11 @@ struct snp_secrets_page { u8 svsm_guest_vmpl; u8 rsvd3[3]; + /* The percentage decrease from nominal to mean TSC frequency. */ + u32 tsc_factor; + /* Remainder of page */ - u8 rsvd4[3744]; + u8 rsvd4[3740]; } __packed; struct snp_msg_desc { @@ -445,7 +461,7 @@ static __always_inline void sev_es_nmi_complete(void) cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT)) __sev_es_nmi_complete(); } -extern int __init sev_es_efi_map_ghcbs(pgd_t *pgd); +extern int __init sev_es_efi_map_ghcbs_cas(pgd_t *pgd); extern void sev_enable(struct boot_params *bp); /* @@ -486,8 +502,6 @@ static inline int pvalidate(unsigned long vaddr, bool rmp_psize, bool validate) return rc; } -struct snp_guest_request_ioctl; - void setup_ghcb(void); void early_snp_set_memory_private(unsigned long vaddr, unsigned long paddr, unsigned long npages); @@ -513,8 +527,7 @@ void snp_kexec_begin(void); int snp_msg_init(struct snp_msg_desc *mdesc, int vmpck_id); struct snp_msg_desc *snp_msg_alloc(void); void snp_msg_free(struct snp_msg_desc *mdesc); -int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req, - struct snp_guest_request_ioctl *rio); +int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req); int snp_svsm_vtpm_send_command(u8 *buffer); @@ -556,7 +569,7 @@ static inline void sev_es_ist_enter(struct pt_regs *regs) { } static inline void sev_es_ist_exit(void) { } static inline int sev_es_setup_ap_jump_table(struct real_mode_header *rmh) { return 0; } static inline void sev_es_nmi_complete(void) { } -static inline int sev_es_efi_map_ghcbs(pgd_t *pgd) { return 0; } +static inline int sev_es_efi_map_ghcbs_cas(pgd_t *pgd) { return 0; } static inline void sev_enable(struct boot_params *bp) { } static inline int pvalidate(unsigned long vaddr, bool rmp_psize, bool validate) { return 0; } static inline int rmpadjust(unsigned long vaddr, bool rmp_psize, unsigned long attrs) { return 0; } @@ -587,8 +600,8 @@ static inline void snp_kexec_begin(void) { } static inline int snp_msg_init(struct snp_msg_desc *mdesc, int vmpck_id) { return -1; } static inline struct snp_msg_desc *snp_msg_alloc(void) { return NULL; } static inline void snp_msg_free(struct snp_msg_desc *mdesc) { } -static inline int snp_send_guest_request(struct snp_msg_desc *mdesc, struct snp_guest_req *req, - struct snp_guest_request_ioctl *rio) { return -ENODEV; } +static inline int snp_send_guest_request(struct snp_msg_desc *mdesc, + struct snp_guest_req *req) { return -ENODEV; } static inline int snp_svsm_vtpm_send_command(u8 *buffer) { return -ENODEV; } static inline void __init snp_secure_tsc_prepare(void) { } static inline void __init snp_secure_tsc_init(void) { } |